{"id":"d24644e2-df06-4c7a-a2fb-bf203109d754","shortId":"9Ry2C5","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/wire/167` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment scheme is \"exact,\" meaning the caller pays a fixed amount per request. The timeout is 300 seconds.\n\nWhile the platform lists many endpoints across analytics, AI, finance, and utility categories, the specific functionality behind `/api/v1/wire/167` is not documented beyond the generic label \"Premium API Access.\" No OpenAPI schema, request/response examples, or detailed documentation were found in the crawl. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. Prospective users should be aware that the exact input parameters and response format for this particular endpoint are unknown.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","lowpaymentfee","Base network API","crypto-paid API"],"warnings":["The specific functionality of /api/v1/wire/167 is not documented — 'Premium API Access' is a generic label with no details on inputs or outputs.","No OpenAPI spec, request schema, or response schema is available.","All documentation pages (docs, API, pricing, README) returned only a 'Connect wallet' prompt with no substantive content.","The platform lists many endpoint categories but it is unclear which, if any, are fully functional."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/167","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/wire/167","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/wire/167 is entirely undocumented. The docs and other pages returned only wallet-connect prompts with no 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'0.02':12,28,81,136 '000':131 '0x8335':121 '20':130 '2913':122 '300':158 '6':139 'Base network API' 'USDC micropayment API' 'accept':109 'access':7,23,40,187 'across':166 'ai':65,168 'amount':128,152 'analyt':64,167 'api':6,22,39,93,186,203 'awar':223 'base':9,25,89,124,132 'behind':176 'beyond':181 'call':4,20 'caller':148 'categori':61,172 'chain':117 'challeng':102 'commit':98 'confirm':103 'connect':212 'content':218 'contract':120 'crawl':200 'crypto-paid API' 'data':63 'decim':140 'detail':194 'doc':202 'document':180,195 'endpoint':34,54,74,105,165,235 'equal':135 'exact':145,226 'exampl':192 'financ':68,169 'fix':151 'format':231 'found':197 'function':175 'generic':183 'http-post' 'includ':62 'infrastructur':71 'input':227 'key':94 'label':184 'learn':67 'limit':96 'list':163 'live':107 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':66 'mani':53,164 'maximum':127 'mean':146 'network':90 'no-api-key' 'offer':55 'on-chain':115 'one':51 'openapi':189 'page':207 'paid':84 'paramet':228 'particular':234 'path':48 'pay':2,18,149 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request' 'payment':44,112,142 'per':3,13,19,29,82,153 'platform':58,77,162 'post':110 'premium':5,21,38,185 'price':79,204 'prompt':214 'prospect':219 'protocol':45 'provid':37 'rate':95 'readm':206 'request':14,30,83,111,154 'request/response':191 'requir':99 'respons':230 'return':209 'schema':190 'scheme':143 'second':159 'settl':114 'span':60 'specif':47,174 'substant':217 'timeout':156 'unit':133 'unknown':237 'usdc':16,32,86,119,137 'usdc-base-network' 'use':118,138 'user':220 'util':72,171 'via':10,26,41 'wallet':213 'web3':69 'x402':11,27,43,101 'x402 API' 'x402-payment'","prices":[{"id":"3db3c96f-14b8-460c-b89c-c1a74642e6a9","listingId":"d24644e2-df06-4c7a-a2fb-bf203109d754","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/wire/167","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:51.322Z"}],"sources":[{"listingId":"d24644e2-df06-4c7a-a2fb-bf203109d754","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/167","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:51.322Z","lastSeenAt":"2026-04-22T10:02:35.690Z"}],"details":{"listingId":"d24644e2-df06-4c7a-a2fb-bf203109d754","quickStartSnippet":"# The endpoint requires an X-PAYMENT header with a valid x402 payment proof.\n# Using curl as a conceptual example (actual payment header must be constructed by an x402 client):\ncurl -X POST https://lowpaymentfee.com/api/v1/wire/167 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All endpoints priced at $0.02 per request with no API keys, rate limits, or minimums","source_url":"https://lowpaymentfee.com"},{"claim":"Payment is in USDC on the Base network via x402 with maxAmountRequired of 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/wire/167"},{"claim":"Platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/167"}],"useCases":["Programmatic access to premium API services without traditional API key management","Agent-driven workflows that need on-demand, pay-as-you-go API calls settled in USDC","Integrating x402-compatible endpoints into automated pipelines on the Base network"],"bestFor":["Developers or agents wanting frictionless pay-per-call API access","x402-compatible clients on the Base network","Use cases where avoiding API key provisioning and rate limits is valuable"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-network USDC wallet or x402-compatible client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.996Z"},"updatedAt":"2026-04-22T10:02:35.690Z"}}